A gas nanosensor unaffected by humidity

被引：13

作者：

Zhang, Ting ^{[1
,2
]}

Mubeen, Syed ^{[1
,2
]}

Yoo, Bongyoung ^{[1
,2
]}

Myung, Nosang V. ^{[1
,2
]}

Deshusses, Marc A. ^{[1
,2
,3
]}

机构：

[1] Univ Calif Riverside, Ctr Nanoscale Sci & Engn, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

[3] Duke Univ, Dept Civil & Environm Engn, Durham, NC 27708 USA

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 25期

关键词：

CARBON NANOTUBES; SENSOR ARRAY; ELECTRICAL-CONDUCTIVITY; POLYANILINE; NANOPARTICLES; ETHANOL; NO2;

D O I：

10.1088/0957-4484/20/25/255501

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The fabrication of a gas nanosensor for detecting ammonia gas in air that is unaffected by humidity is demonstrated. On functionalizing single-walled carbon nanotube (SWNT) networks with a precise amount of camphorsulfonic-acid-doped polyaniline (PANI(CSA)), the opposite electrical resistance responses of the CSA-doped PANI and SWNTs to humid air effectively canceled each other, thereby eliminating any effects of humidity during sensing experiments. The approach should be widely applicable for eliminating undesirable interferences for gas nanosensors.

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页数：5

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共 24 条

[11] Palladium nanoparticles decorated single-walled carbon nanotube hydrogen sensor [J].

Mubeen, Syed ;

Zhang, Ting ;

Yoo, Bongyoung ;

Deshusses, Marc A. ;

Myung, Nosang V. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (17) :6321-6327

[12] Investigation of the humidity effect on the electrical properties of single-walled carbon nanotube transistors [J].

Na, PS ;

Kim, HJ ;

So, HM ;

Kong, KJ ;

Chang, HJ ;

Ryu, BH ;

Choi, YM ;

Lee, JO ;

Kim, BK ;

Kim, JJ ;

Kim, JH .

APPLIED PHYSICS LETTERS, 2005, 87 (09)

[13] Polyaniline as a new sensitive layer for gas sensors [J].

Nicolas-Debarnot, D ;

Poncin-Epaillard, F .

ANALYTICA CHIMICA ACTA, 2003, 475 (1-2) :1-15

[14] Effect of H2O adsorption on electron transport in a carbon nanotube [J].

Pati, R ;

Zhang, Y ;

Nayak, SK ;

Ajayan, PM .

APPLIED PHYSICS LETTERS, 2002, 81 (14) :2638-2640

[15] Ab initio study of CNT NO2 gas sensor [J].

Peng, S ;

Cho, KJ ;

Qi, PF ;

Dai, HJ .

CHEMICAL PHYSICS LETTERS, 2004, 387 (4-6) :271-276

[16] Anodized aluminum oxide (AAO) nanowell sensors for hydrogen detection [J].

Rumiche, F. ;

Wang, H. H. ;

Hu, W. S. ;

Indacochea, J. E. ;

Wang, M. L. .

SENSORS AND ACTUATORS B-CHEMICAL, 2008, 134 (02) :869-877

[17] Gas sensor array based on metal-decorated carbon nanotubes [J].

Star, Alexander ;

Joshi, Vikram ;

Skarupo, Sergei ;

Thomas, David ;

Gabriel, Jean-Christophe P. .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (42) :21014-21020

[18] Single-walled carbon nanotubes modified with Pd nanoparticles: Unique building blocks for high-performance, flexible hydrogen sensors [J].

Sun, Yugang ;

Wang, H. Hau ;

Xia, Minggang .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (04) :1250-1259

[19] Electrical conductivity response of polyaniline films to ethanol-water mixtures [J].

Tarachiwin, L ;

Kiattibutr, P ;

Ruangchuay, L ;

Sirivat, A ;

Schwank, J .

SYNTHETIC METALS, 2002, 129 (03) :303-308

[20] WATER EFFECTS IN POLYANILINE - A NEW CONDUCTION PROCESS [J].

TRAVERS, JP ;

NECHTSCHEIN, M .

SYNTHETIC METALS, 1987, 21 (02) :135-141